Analysis of the Long-Term Stability Test Report for the LY-LDE Electromagnetic Flowmeter

The latest long-term stability test report for the LY-LDE electromagnetic flowmeter released by Xi'an Shenghongchuang Instrument Co., Ltd. shows that this series of products (including models such as LY-LDE-A/B/C/WS) still maintains outstanding performance under harsh operating conditions. As an important member of the XFC electromagnetic flowmeter family, its measurement accuracy attenuation rate is lower than 0.2%/year, providing a reliable solution for the field of industrial flow control.

1. Scientific Validation of the Test Environment and Methods

This test was conducted in strict accordance with the national standard GB/T 18659-2018 "Electromagnetic Flowmeter" under extreme conditions including simulated chemical corrosive media (pH value 2-12), high temperature and high pressure (up to 150℃/4MPa), and strong electromagnetic interference (10V/m). The LY-LDE series electromagnetic flowmeter adopts a patented electrode structure (Patent No. ZL2020XXXXXX.X). The test cycle lasted as long as 18 months, with a data sampling interval accurate to 1 second, and a cumulative analysis of more than 2 million sets of data points.

Compared with similar products such as the XFE electromagnetic flowmeter and the RT-LDE electromagnetic flowmeter, the LY-LDE series reduced the error fluctuation range by 42% under pulsating flow conditions, and its unique adaptive filtering algorithm effectively suppresses the "slurry noise" phenomenon in slurry measurement. The test report specifically points out that the LY-LDE-WS model, in sludge flow monitoring at wastewater treatment plants, still maintained an indication error of ±0.5% after 6000 hours of continuous operation.

2. Breakthrough Performance of Core Indicators

By comparing the test data of the three sub-models LY-LDE-A/B/C, it was found that their key performance parameters are all better than the industry average level:

It is particularly worth noting that in pure water measurement scenarios in the pharmaceutical industry, the LY-LDE-C model, using technology from the same source as the JCLDBE electromagnetic flowmeter, achieved stable measurement of low-conductivity media (≥8μS/cm), solving the industry problem of signal attenuation in traditional electromagnetic flowmeters in ultrapure water applications.

3. Engineering Value of Structural Design and Material Innovation

Disassembly and analysis of the test prototype found that the LY-LDE series draws on the lining process of the HPLDE electromagnetic flowmeter and adopts a three-layer sintered PTFE lining structure:

• Outer layer: 0.5mm wear-resistant layer (containing silicon carbide particles)
• Middle layer: 1mm dense PTFE barrier layer
• Inner layer: 0.3mm smooth anti-static layer

This innovative design reduces the lining wear rate to 1/7 of that of traditional structures when conveying corrosive media containing solid particles. The magnetic circuit system uses neodymium iron boron N52-grade magnetic steel combined with a permalloy magnetic yoke. After a 2000-hour accelerated aging test, the magnetic field strength attenuation was only 0.3%, far exceeding the requirements of the IEC 60068-2-14 standard.

4. Practical Application Results of Intelligent Diagnostic Functions

During the testing process, the intelligent diagnostic system of the LY-LDE electromagnetic flowmeter was specially verified:

• Electrode contamination warning: an alarm is triggered when the electrode impedance changes by more than 15%, with an accuracy rate of 98.6%
• Empty pipe detection: using a multi-frequency excitation method, the detection speed is 200ms faster than traditional methods
• Ground fault detection: integrated grounding loop impedance monitoring module based on FFT analysis

In a comparative test for a petrochemical project, the fault warning function of the LY-LDE electromagnetic flowmeter helped users reduce unplanned downtime by an average of 73%, and the consistency between its diagnostic data and actual on-site operating conditions reached 91.2%.

Industry Application Recommendations and Technical Outlook

Based on the test data, we provide selection recommendations for different industries:

• Food and pharmaceuticals: give priority to the LY-LDE-C model, whose hygienic connection and CIP cleaning compatibility have passed 3A certification
• Mining and metallurgy: the LY-LDE-WS model is recommended, with a wear-resistant lining capable of handling mineral slurry with a solids content of ≤30%
• Energy and chemicals: the explosion-proof design of the LY-LDE-A/B models (Ex d IIC T6) is more suitable for hazardous areas

Xi'an Shenghongchuang Instrument Co., Ltd. is developing the next-generation LY-LDE electromagnetic flowmeter, which will integrate AI-driven predictive maintenance functions, and plans to obtain SIL3 safety certification in 2024. Existing users can enjoy free technical upgrade services, including remote firmware updates and sensor health status assessment.

Conclusion and Action Guide

This long-term stability test proves that the LY-LDE electromagnetic flowmeter series has reached an industry-leading level in measurement accuracy, material durability, and intelligent diagnostics. As an important achievement of the XFC electromagnetic flowmeter technology platform, its performance indicators have passed third-party verification by the National Institute of Metrology, China (NIM).

If you need to obtain the full test report or consult on selection solutions for specific operating conditions, please contact our technical team immediately. Xi'an Shenghongchuang Instrument Co., Ltd. provides free on-site survey and flow system optimization services to help enterprises achieve precise measurement and improved energy efficiency.

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